Lock.



P. H. YAWMAN.

LOCK! APPLICATION FILED MAY 24, 1916.

1,261,089; Emma Apr.2,1918.

PHILIP H. YAWMAN, or EocHEsrEE, NEW YORK, AssieNoE To YAWMAN a ERBEEire. co., or EocHEsTEE, NEW YORK, n coEEoEATron or NEW YORK.

LOCK.

To all whom z't may concern.'

Be it known that I, PHILIP H. YAWMAN,

of Rochester, in the county of Monroe and."

State of New York, have invented certain new anduseful Improvements inLocks; and. l do hereby declare the following to be a full, clear, and.exact description of the same, reference being had to the accompanyingdrawings, forming a part of this speciiication, and to thereferencenumerals marked thereon.

My present invention relates to locks and it has vfor its object toprovide a key lock especially adapted for the particular requirements ofling containers whereb in a tumbler lock of the cylinder type the ey may.be withdrawn with the parts in the unlocked position and the same latermoved to locked position without Ithe'use of the key. VThe improvementsare also directed toward simplicity of design and manufacture and'totheseand other ends the iriventionresides in certain improvements andcombinations of parts all as will be hereinafter more fullyl described,the novel' features being pointed out in the claims at the end of thespecification. y

Inthe drawings:

Figure 1 is a vertical sectional view through a Ifiling cabinet providedwith a f lock constructed" fin accordancewith and illustrating1 oneembodimentof my invention" 2 is` an enlargedsectional view "taken L:throughv the lock-with .the plug and keyvinserte'd tadisplace thelocking pin;`

is a transverse section takensub stantirally on the line 3.-,-3 of Fig.12; u

Fig. 4 is a view similar to Fig. "2 but showing the plug rotatedtoapositionA iny which the key may be withdraw-n, and n Fig. 5 isaltransverse,sectiontaken 'sub'- tantiallylon they line 5-#5 of Fig. 4.

Similar reference numeralsthioughout the several iigures indicate lthesame parts.

In Fig. 1 is shown a familiar type ofgfil- 1 containing cabinetembodying acasin in a drawer chamber 2 in whlch operates a rawer 3. Thedrawer is secured in closed position by a pivoted latch 4 entering anSpecification of Letters Patent.A i

Application med nay-2i, 1916. ,serial Eb. 99,686.

aperture 5 in the rear wall of thedrawer. -I'Ilhe latch 4 is carried ona vertically movable lock bar 6 which, upon being raised, releases thelatch and when in lowered 'position holds the latter ready to snap intoengagement with the drawer under the `influence of a spring 7. i

rlhe raising and lowering of the rod 6 is. ac-

complished through therotation of a rod 8 journaled in a bracket 9secured tothe bottom wallof the chamber 2 and depending therefrom. Therear end of the rod 8 has an eccentric portion 10 journaled in thevertical lock bar 6 and a half rotationof the rod 1n one directionraises the bar while a half rotation in the other direction lowers it.

A key lock that controls 'the rotation 4of the rod 8 is mounted upon afront arm 11 of the bracket 9 and thus the latter and the rod and lockconstitute a single locking unit that can readily be applied inassembled contherethrough and joined at its rear end, concentrically, toa coupling sleeve -14 in which the forward end of the rod 8 is secured.The

plug may also extend through the bracket arm' 11 to which the case 12is'attached and adjacent to this arm 11 the sleeve 14 is provided with alaterally projecting' pin Y 15 that engages stop pins 16 and 17'on thearm to define; the unlocked and locked positions of the plug and lofthelatch 4 .and to limit the rotation of the plug and rod 8 to a `halfrevolution. f The case 12 and plug 13 are provided with pin: chambersl18 and' 19 in which operate drivers 20' and pins 21, the drivers beinpressed by springs 22. The' chambers 19 an p1ns'21jfintersect a flatkeyway 23' extending longitudinally of they plug` 13. When the peripheryof the plug' 13, permitting rota tion of the latterl and the release4ofthe lock.,- Ordinarily, however, when the cham-l bers 18 and 19 arein re tion, the drivers aret rust down past the 4key 24, is inserted,the bits 25 thereof raisel ster in vlocking posiprevents removal o theyare held against the walls of the bore plug back to locked position.

in which the plug rotates against any axial v movement until they areagain inalinement with the chambers 18 and the yielding drivers 20. Thisis desirable in most instances perhaps as it prevents the operator fromwithdrawing the key in the belief that the device is locked when, as amatter of fact, it is unlocked but in the case of filing devices, it isusual to lock the drawers or similar elements up at night but, afterunlocking them in the morning, to leave them Aunlocked for the day orwhile they are to be in constant use. l

I therefore provide in a wall of the case 12 a yielding portion 26 intowhich the pins 21 may be brought to register after leaving their lockingposition of register with the chambers 18 and drivers 20 which latterposition is shown in Fig. 3. In the present.

instance, this yielding wall consists ofk a block normally pressedagainst the'periphery of the plug 13 by a spring ring 27 encircling thecase 12. Vhen the plug is rotated a half revolution to the unlockedpositions of Figs. 4 and 5 and it is sought to remove the key 211 thepins 21 are permitted to ride over tle bits ott the key as they canpress outwardly the block 26 which latter, through its spring 27,returns the p'ins flush with the periphery of the plug after the key isout. It is then unnecessary to reinsert the key in order to lock the pluagain (though it may be done in .this way lfor I provide an extension 28on the plug 13 constituting a forwardly projecting knob that can betwirled with the fingers to bring the Once this locked position isvreached, however, it is, of

course, impossible to use' the knob to rotate the plug again until thekey has been inserted and the .pins properlywdispla-ceds The yieldingwall or member '26 is, inthe present embodiment, arranged diametri-`callyopposite the driver chambers 18 providing for a half rotation ofthe-Plug to reach van unlocked and" key-withdrawing position but this isbecause the particular latch mechanism forv the Vdrawer irst describedrequires this movement. It will be readily seen, however, that a lesseror greater degree of rotation could as easily be provided for. as theyielding portion 26 could be placed at any point on the peripheral pathof the plug.

With a filing device locked in the manner Y therein, there beingregistera above described, an employer may, with one use of his key,unlock the ling device for continuous use during a period at the end ofwhich a clerk or other `person may be re and plug, and pins operating inthe chambers, of a key adapted to enter the plug and to displace thepins, the case being formed to allow displacement of the pins andwithdrawal of the key after a partial rotation of the plug, means forreturning the pins to the position in which they were held by the key,and means independent of the key'fo'r rotating the plug, back to lockingposition.

2. In a lock, the combination with a case, akey receiving plug rotatabletherein?7 there being registerable pin chambers in both case and plug,and` pins operating'in thej chambers, of a key adapted to enter the plugand to displace the pins, the case being formed to allow displacement ofthe pins andwithdrawal of the key after a partial rotation ofthe plug,means for returning the pins to the position in which they were held bythe key, and an extension on the plug independent of the key and forminga knob means of which the plugmay be .rotated back to locking position.

3. In a lock, the combination with a case, a key receiving plugrotatable therein, there being registerable pin chambers in both caseand plug, and pins operating in the chambers, of a key. adapted to enterthe plug and displace the pins, and a yielding wall in the casingpermitting the pins to ride the bits of the key upon withdrawingmovement of the latter while the plug isout of locking position, saidWall tending to holdthe pins within the chambers in the Aplug'while inengagement therewith. a. In a lock, the combination with a case, a keyreceiving plug rotatabletherein, there ybeing registerable pin chambersin both case of 'the key upon withdrawing movement of the latter whilethe plug is out of locking position, said Wall tending to hold the pinswithin the chambers of the plug while in engagement therewith, and meansindependent of the key for rot-ating the plug back to locking position.

5. In a lock, the combination with a c linder case, a key receiving plugrotataiile le pin chambers in both case and plug, and pins operating inthe chambers, of a key adapted to enter the plug and displace the pins,a displaceable Wall in the cylinder case permitting the-pins to ride thebits of the key upon 5 Withd the plug is out of locking position, and aspring ring encirclingv the cylinder case to press upon the displaceablewell' and hold raWlng movement of the latter While the pinsv within thechambers in the plug While the said Wallis in engagementY there- 10with.

lPHILllP H. YA le l

